Machine for molding and pressing concrete and similar material into block form



Jan. 16, 1923. I 1,442,283., w. H. McCANDLlSH.

MACHINE FORXMOLDING AND PRESSING CONCRETE AND SIMILAR MATERIAL INTO BLOCK EORM. FILED JUNE 1, 1922. 4 SHEETSSHEET 1.

I I I I I l l l Jan. 16, 1923. 1,442,283.

. i w. H. McCANDLlSH. I

I MACHINE FOR MOLDING AND PRESSING CUNCRETE AND SIMILAR MATERIAL INTO BLOCK FORM.

FILED JUNE I. I922. 4 SHEETS-SHEET 2- I Jan. 16, 1923.

1,442,283. w. H. McCANDLlSH'. H

MACHINE FOR MOLDING AND PRESSING CONCRETE AND SIMILAR MATERIAL INTI) BLOCK FORM. FILED JUNE 1, 1922. 4 $I-|EETSSHEET a.

W I M Q Y L v 7 w 4/ 5.958 .5 1

g x A y 2 \J 60 a I 6 2d I Jail 16,1923.- D

W. H. MCCANDLISH.

NG CONCRETE AND SIMILAR MATERIAL INTO BLOCK FORM. I FILED JUNE 1, I922- 4 SHEETSSHEET 4- I MACHINE FOR MOLDING AND FRESSI Patented Jan. 16, 1923. v,

UNITED STATES PATENT" )OFFICl1; 1

WILLIAM HERBERT MccAND IsH, 0E WARE; ENGLAND, ASSIGNOR 0E ONE-THIRD To .SABULITE (GREAT BRITAIN) LIMITED. orLoNDoN, ENGLAND, A BRITISH COM- PANY, AND ONE-THIRD To JOHN BELLINGHAM, 0] sn cLEMENTs, JERSEY. GHAN- NEL' IsLANDs, ENGLAND.

MACHINE EoR MOLDING AND PRESsING ooNcRE E AND sIMILAR MATERIAL INTo A BLOCK EORM. I

Application filed June 1,

T 0 all whom it may concern:

Be it known that I, VVILLI-AM HERBERT McCANDLIsrI, a subject of the King of Great Britain, of Barwick Ford, High Cross,

Vare in the county of Herts, England,

ticle'or block onto a supporting table and I,

being provided with movable side walls pivotally mounted within a-casing and with actuating means adapted to displace the side walls outwards and to withdraw the cores usu'allyemployed in connection there with from the pressed material so as to enable the finished article or block to'be discharged .onto the said supporting table.

In accordancewith the invention I provide a mould box in which the-four walls or doors of-the mould are adapted to be opened and closed by the rotation of a shaft or spindle extending transversely through the mold box and the mold box casing. The said spindle or shaft is provided at its respective ends with oppositely screw threaded portions each engaging with an internal- 1y screw threaded nut each of which nuts carriestwo pins engaging in slots in a pair of pivotally mountedarms, each pair of arms being secured to a bar of T or other suitablesection adapted to be moved by the aforesaid arms to effect the withdrawal or. insertion of the'core pins when, these are used and also to effect the opening and closing of the side walls or doors of the mold box. In one embodiment'of the invention the e nd doors of the mold boxarexalso held in closed-position by extensions of the said T or other shaped bars,spring' means being provided to opensaid doorswhen released on withdrawal of the said bars, whilein another constructional form 'of'the invention the aforesaid bars are used to operate 1922. Serial No. 565,217.

the sidewalls only; the end doors being openedby means of. a pair of I eccentrics mounted on the ends of the operating In, orderthat the said invention may be clearly understood and readily, carried into effect, the samewill now bedescribed more fully with reference to the accompany ng drawings in whichz' a Figure 1 is" a side elevation partlyvin sec-.

tion of one embodiment of the invention.

' Figure 2 is fa part sectional plan thereof.

.Figure 3 is a. sectiontaken at right angles to Figure 2.

mechanism of the end doors;

- Figure 5 is a tranverse section showing the side doors of'the mold opened and the core pins in their withdrawn position.

Figure 6 is a fragmentary section showing one end of the mould box with the side doors'being closed and the core pins'in their withdrawn position.

side of a modified form of mold'box. v Figure 8. isfla sectional plan of the same,

angles to Figure 8. Referring first .to

together. The four-walls of the mold box Figure 4 is a section showingthe closing,

, v 'Figure7 is a view partlyin section of one Figures 1- to 6 the mold i g 7 box proper is located within a casingicom prising side 'wallsl? and end walls 1 bolted V are'adaptedto be opened and closed by the A actuation of a spindle 42 passin through the mold box and which is provic ed witha squared'end 43 for engagement by a suitable operating tool or handle said squared endiextending through-an opening. in the wall P of the mold boxcasingf At or near 7 each extremity the spindle. 42' is screw" threaded, at one end' with' aright hand threadand A at=-the other withaleft hand thread, 'an' interiorly threaded nut. 44 1 being arranged oneach suchaend. Each nut M carries' two pineal-5 engagingin slots 46 I in arms 47 which. areyf-pivoted at 48 to the mold box casing, said arms being connected,

at'their lower ends to a bar- 49 of Torother suitable sect-ion adapted to engage a portion 2 of the side walls 2 of the mold box which side wall is pivoted. at 48 to the mold box casing. One edge of this T-bar 49 is adapted to fit between collars 50 formed on or carried by the core pins 38. In this manner when the spindle 42 is rotated the nuts move along the threaded portion causing the swinging of the arms 47 and the opening or closing of the side doors 2 as well as the insertion or withdrawal of the core pins 38. In order to prevent the nuts 44 rotating, pins 51 engaging in' grooves in said nuts 44 are provided, the said pins 51 being screwed into orifices in the'wall 1* of the mold box casing. V

A leaf or other spring 52 (Figure 2) is arranged in front of the T-bar 49 to hold. the door in closed position until after the pins 38 are withdrawn from the mould whereupon the T-bar causes the openingof the mould-box as above described. For controlling the opening and closing of the end doors 2 the T-bars are bent to extend around. the ends of the mould box as best seen in Figure 4-in which the bent end of the bar 49 is shown as provided with a shoe or cam surface 53 adapted to ride over a ball54 located in a recess in a lug 55 secured to or integral with the door 2. The doors 2 are normally held in open position by springs (not shown hen the T-bar 49 is moved consequential upon rotationof the spindle 42 in a direction to close the door the cam surface 53 moving over the ball 54 depresses the lug causing the door 2 to swing about its pivot and close against the action of its spring, the cam surface 53 being formed-with an inclined portion 53 adapted to coact with the ball 54-to hold the door in closed position. 7 a

A modification of the mold box is illustrated in Figures 7 to 9. In this form the arms 47 are secured at their lower ends to an angle bar 49 carrying a bar 56 engaging in a slot or groove in the core pins 38. This bar 56 is attached to the angle bar 49 by studsor pins 56 passing through slots 56 in the bar 56 so that the bar 56 can be moved against the action of a spring (not'shown) to bring the cut away portions 56 of the bar 56 into register with the core pins 38 thus permitting the latter to be withdrawn and fitted into any of the other orifices 57 provided in the door 2 and the'boss 57*" formed thereon (see Figure?) The side doors are thus operated in this form of the invention in substantially the same way as described above with reference' to Figures 1 to 6. A spiral spring 52 is in this for m; used instead of the leaf spring 52 however. For controlling the end doors'ho wever. in this embodiment a pair of eccentrics 58, 59 are mounted upon the spindle 42 said eccentrics being connected respectively by links 60, 61 with.

the shafts or spindles 62 which, to provide for adjustment, are formed with eccentric end portions, the said spindles 62 being secured in any suitable manner to extensions 63 of the end doors 2 as shown in Figure 8.

or pallet 70, as shown in dotted lines in Figure 5 is used; a bottom pallet 65is also intended for use being held in position by the hooks 64, (Figure9).

It will be understood that I do not desire to confine myself-to the exact construction and arrangement described above as many modifications may be made therein coming within the spirit of the invention.

\Vhat I claim and desire to secure by Letters Patent of the'United States is l. A mould box of the kind referred .tofor molding concrete and similar material, in block form in which the four walls or doors of the mould are opened and closed by rotation of a shaft or'spindle extending transversely through the mould box. T

2. A mould 'box in accordance with claim 1 in which the said spindle or shaft is provided at its respective ends with oppositely screw threaded portions each engaging with an internally screw threaded nut each, of which nutscarries two pins engaging in slots in a pair of pivotally mounted arms, the free ends of each pair of said arms being secured to a bar of T or other suitable section adapted to be moved by the aforesaid arms to effect withdrawal or insertion of the core pins and also to effect the opening and closing of theside walls or doors of the mould box.

3. A mould box in accordance with claim 2 in which the end doors of the mould box are held in closed position by extensions of the said T or other shaped bars, a ball. mounted in a recess in each of said doors, and a cam surface adapted to coact with said ball to maintain the door in the closed position.

4; A mould box comprising movable side and end walls, a rotatable spindle extending through the box, and means connected with the spindle for moving the side and end walls simultaneously. i

5. An invertible mould box for moi-ding concrete and similar material into block form having movable walls and a spindle extending through the box for moving the walls, the box being filled with concrete and similar material "toone side of the spindle.

6. A mould box for molding.'materialconr prising movable walls and a spindle extend: ingthrough the box andv operably connected with the said walls, the mold box being. constructed for being filledwith material on "one side of the spindle.

'7. An invertible mold box embodying movand end walls, a spindle extending through the, box and side walls, core pins, and means operably connected with the spindle and core pins for moving the side walls and for moving the core pins relatively to the side walls.

9. A mold box comprising movable side and end. walls, ,a spindle extending through iv the box .and side walls, core pins movable relatively to the side walls, means operably' connected with the spindle and core pins and springs disposed between thefside walls and a part of the said means.

10. A mold box comprising a casing, mov able side and end walls, a spindle extending through the box and side walls, arms pivoted the spindle and engagin'g said arms, and

bars connected to said arms for moving the said side walls; r, d

11. A mold box comprising a casing, movable side and end walls, a spindle extending through the box and side walls, arms pivoted to thelcasing, means operably connected to the spindle and engaging said arms, bars connected to the said arms, and springs disposed between the bars and side walls.-

12. mold box comprising a casing, movable side and end walls, a spindleextending through the box and side walls, arms pivoted to the. casing, means operably connected to the spindle and engaging said arms, core pins movable relatively to the side walls, bars attached tosaid arms and engaging the said core pins, and springs disposedbetween the said arms and side walls;

13. A mold box comprising a casing, movable side and end walls, a spindle provided with right and left hand screw threads and extending through the box and side walls,

arms pivoted to the casing, nuts on the said spindle engaging the right and left hand screw threads and connected with the said arms, and bars on the said arms for moving the side walls. v

14. A mold box comprising a casing, movable side and end walls, a spindle provided with right and left hand screw threads and extending through the box and side walls, arms pivoted to the casing, nuts on the said screw threads and connected with the said arms, bars provided with cam shaped ends spindle engagingtheright and left hand i J attached to the said arms, and lugsfon'the j end walls for the engagement of the cam shaped ends. 7

15. A mold box comprising a casing, movable side and end walls, a spindle provided withright andlefthand screw threads and I extending 'through the box andside walls,

arms pivotedto' the casing, nuts on the said" spindleengaging'the right and left hand screw threads and connected with the said arms, core pins with collars, bars engaging the said collars and provided with cam shaped ends attached to the said arms, lugs 1 fitted with balls attached. to the endwalls and engaged by the cam shaped ends, and

vsprings betweenthe bars and the side walls} ,16. A mold box for molding concrete and similar material in block form comprising movables'ide and end walls, a spindle extending across the box and through the side to the casing, means operably connected to,

so walls and: provided at itsrespective ends with oppositely screw threaded portions, internally screw threaded nuts provided with pins andmounted on the threaded portions of the spindle, a mold box casing, arms having free ends and pivotally mounted on the casing and formed with slots with which the said .pins engage, bars secured to the free ends of the said arms, c'ore pins engaged by the said bars, and means for'rotating the -spindle and thereby moving the arms and bars through the said nuts,

17. A mold'box for molding concrete and similar material in block form comprising movable side and end walls, a spindle extending across the box and through the side.

walls and provided at its respective ends,

having free endspivotally mounted on the shaped ends and secured to the free ends of casingand formed with slots with which the said pins engage, bars provided with cam,

the said arms, core pins engaged by the said bars, lugs on the end wallslengaged by the cam shaped ends of the bars, springs between the bars and the side walls, and means for rotating the spindle and moving the arms and bars for operating the side and end walls. I

WILLIAM HERBERT ncci nnriisn; 

